  Guide to the Mammals of Pennsylvania (Paperback) ISBN-13: 9780822953937 ISBN-10: 0822953935 Genres: Crafts, Hobbies & Home, Science & Math ?  Mammalogy Adaptation Diversity and Ecology (Hardcover) ISBN-13: 9780072909487 ISBN-10: 007290948X Genres: Science & Math, Engineering & Transportation ? |
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